PROCESS FOR PRODUCING LIQUID CRYSTAL PITCH HAVING ANISOTROPY

PROCESS FOR PRODUCING LIQUID CRYSTAL PITCH HAVING ANISOTROPY

An anisotropic liquid crystal pitch is produced by: (a) heating a raw material, which is coalic heavy oil and pitch, up to 350-410 deg.C at 3-10 deg.C/min, in inert gas of 1-100 torr, and heat treating it at 600-1000 rpm for 2-5 hours, and (b) reheating it up to 400-470 deg.C at 5-10 deg.C/min and h...

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Bibliographische Detailangaben
Hauptverfasser: LEE, KYU - DONG, YUN, SUNG - HO, OH, SAE - MIN, PARK, YAN - DUCK
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FUELS
LUBRICANTS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PYROLIGNEOUS ACID
TECHNICAL GASES CONTAINING CARBON MONOXIDE
WORKING-UP PITCH, ASPHALT, BITUMEN, TAR
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Beschreibung
Zusammenfassung:An anisotropic liquid crystal pitch is produced by: (a) heating a raw material, which is coalic heavy oil and pitch, up to 350-410 deg.C at 3-10 deg.C/min, in inert gas of 1-100 torr, and heat treating it at 600-1000 rpm for 2-5 hours, and (b) reheating it up to 400-470 deg.C at 5-10 deg.C/min and heat treating at more than 600 rpm in a pressure of 10-760 torr within 2 hours. Its melting temperature is less than 370 deg.C.